PTFE coatings on the “U” bolts normally come as an inner lining on the rubber sleeve. This is done where low coefficient of friction and anti-stick properties is required on the pipe installation.
​Polytetrafluoroethylene (PTFE), is a thermoplastic member of the fluoropolymer family of plastics. PTFE has a low coefficient of friction, excellent insulating properties, and is chemically inert to most substances. It also can withstand high heat applications and it is well know for its anti-stick properties.

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